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PDF LE24CB1283 Data sheet ( Hoja de datos )
| Número de pieza | LE24CB1283 | |
| Descripción | Two Wire Serial Interface EEPROM | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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www.DataSheet.co.kr
Ordering number : ENA1887
CMOS IC
LE24CB1283 Two Wire Serial Interface EEPROM
(128K EEPROM)
Overview
The LE24CB1283 (hereinafter referred to as ‘this device’) is two-wire serial interface EEPROM (Electrically Erasable
and Programmable ROM). This device realizes high speed and a high level reliability by SANYO’s high performance
CMOS EEPROM technology. This device is compatible with I2C memory protocol, therefore it is best suited for
application that requires re-writable nonvolatile parameter memory.
Functions
• Capacity
: 128K bits (16k × 8 bits)
• Single supply voltage
• Interface
: 2.7V to 5.5V.
: Two wire serial interface (I2C Bus*)
• Operating clock frequency : 400kHz
• Low power consumption : Standby: 2μA (max), Active(read): 1mA (max.)
• Automatic page write mode: 64 bytes
• Read mode
• Erase/Write cycles
: Sequential read and random read
: 106 cycles
• Data Retention
: 20 years
• High reliability
: Adopts SANYO’s proprietary symmetric memory array configuration (USP6947325)
Noise filters connected to SCL and SDA pins
Incorporates a feature to prohibit write operations under low voltage conditions.
• Package
: LE24CB1283M MFP8 (225mil)
* : I2C Bus is a trademark of Philips Corporation.
* This product is licensed from Silicon Storage Technology, Inc. (USA), and manufactured and sold by
SANYO Semiconductor Co., Ltd.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
10511 SY 20100330-S00005 No.1887-1/12
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
Bus Timing
SCL
SDA/IN
SDA/OUT
LE24CB1283
tSU.STA
tF
tHIGH
tLOW
tHD.STA
tHD.DAT
tHD.STA
tAA tDH
tR
tSU.STO
tBUF
tSP
tSP
Write Timing
SCL
SDA
D0
Write data
Acknowledge
tWC
Stop
condition
Start
condition
Pin Functions
SCL (serial clock)
The SCL signal is used to control serial input data timing. The SCL is used to latch input data synchronously at the
rising edge and read output data synchronously at the falling edge.
SDA (serial input/output data)
The SDA pin is bidirectional for serial data transfer. It is an open-drain structure that needs to be pulled up by resistor.
WP (Write protect)
When the WP signal is high, write protections are enabled. When this signal is low, write operation for all memory
arrays are allowed. The read operation is always activated irrespective of the WP pin status.
S0/S1/S2 (Slave address)
When many devices are connected on the same bus, the S0/S1/S2 are used to select the device. The S0/S1/S2 must be
tied to VDD or GND.
No.1887-5/12
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
LE24CB1283
3) Precautions when turning on the power
This product contains a power-on reset circuit for preventing the inadvertent writing of data when the power is
turned on. The following conditions must be met in order to ensure stable operation of this circuit. No data
guarantees are given in the event of an instantaneous power failure during the internal write operation.
Item
Power rise time
Power off time
Power bottom voltage
VDD
Symbol
tRISE
tOFF
Vbot
min
10
typ
tRISE
max
100
0.2
unit
ms
ms
V
tOFF
Vbot
0V
Notes:
1) The SDA pin must be set to high and the SCL pin to low or high.
2) Steps must be taken to ensure that the SDA and SCL pins are not placed in a high-impedance state.
A. If it is not possible to satisfy the instruction 1 in Note above, and SDA is set to low during power rise
After the power has stabilized, the SCL and SDA pins must be controlled as shown below, with both pins set to high.
VDD
SCL
tLOW
VDD
SCL
SDA
tDH tSU.DAT
SDA
tSU.DAT
B. If it is not possible to satisfy the instruction 2 in Note above
After the power has stabilized, software reset must be executed.
C. If it is not possible to satisfy the instructions both 1 and 2 in Note above
After the power has stabilized, the steps in A must be executed, then software reset must be executed.
4) Noise filter for the SCL and SDA pins
This product contains a filter circuit for eliminating noise at the SCL and SDA pins. Pulses of 100ns or less are not
recognized because of this function.
5) Function to inhibit writing when supply voltage is low
This product contains a supply voltage monitoring circuit that inhibits inadvertent writing below the guaranteed
operating supply voltage range. The data is protected by ensuring that write operations are not started at voltages
(typ.) of 1.3V and below.
No.1887-11/12
Datasheet pdf - http://www.DataSheet4U.net/
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